Fioretti announced he will begin treatment and will save his strength for the fighting the cancer and not seek to job of Chicago's mayor. Instead he'll run for re-election as alderman of the 2nd Ward.

"I'm not afraid of the fight," said Fioretti. "Although I didn't expect this one, I'm going to give it all I've got, I'm going to focus my energy on winning re-election."

Nearly two weeks ago, doctors had surgery to remove his tonsils.
It was more than a sore throat -- a malignancy was found.

Fioretti says he was prepared to announce his candidacy for mayor until the diagnosis.

Some mayoral candidates have reached out to support Alderman Fioretti, including Miguel del Valle.

"I think he's done a fantastic job, and he's raised the right issues over the years, and so w are going to miss him in the campaign," said del Valle.

Others interested in mayor chimed in Tuesday:

Congressman Danny Davis said, "I'm sorry to hear. I wish him a speedy recovery. I hold him in high regard. it's unfortunate he will not run for mayor."

Gery Chico said. "Sunny and I are keeping Alderman Fioretti in our constant thoughts and prayers as he seeks the necessary treatment to restore his health. Bob is a fighter and he will win this fight with proper care, support and love."

And State Senator James Meeks said, "Our prayers are with Bob and his family. Over the years we have worked well together and I know he is a tireless advocate for the City of Chicago. We wish him full health very soon."

Despite the news, Fioretti would not rule out a run for mayor in the future.

"I don't know what the future will hold," Fioretti said, "but right now I'm looking forward to re-election, serving the people of the 2nd Ward."